Features: -There's a red engine start button, an on/off toggle switch, and three more toggle switches for other uses. -The shell is made of carbon fiber, which is durable and comfortable to the touch. -It can reduce power supply impedance, improve ignition efficiency, and make starting acceleration more agile. -Can be used as a switch for electrical devices added to the car, such as strobe lights, chassis lights, fog lights, dome lights, etc. -Not only suitable for professional racing cars, but also for caravans, boats, yachts or other cars. Specification: Colour: black Size: 15*6.5cm/5.9*2.6in Material: abs+aluminum alloy Current: 30A Voltage: 12V .